diff --git a/benchmarks/msgq/1.0/Android.bp b/benchmarks/msgq/1.0/Android.bp
index de84e81..7f8ea99 100644
--- a/benchmarks/msgq/1.0/Android.bp
+++ b/benchmarks/msgq/1.0/Android.bp
@@ -12,7 +12,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.benchmarks.msgq@1.0",
     srcs: [
-        "IBenchmarkMsgQ.hal",
+        ":android.hardware.benchmarks.msgq@1.0_hal",
     ],
     out: [
         "android/hardware/benchmarks/msgq/1.0/BenchmarkMsgQAll.cpp",
@@ -24,7 +24,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.benchmarks.msgq@1.0",
     srcs: [
-        "IBenchmarkMsgQ.hal",
+        ":android.hardware.benchmarks.msgq@1.0_hal",
     ],
     out: [
         "android/hardware/benchmarks/msgq/1.0/IBenchmarkMsgQ.h",
diff --git a/bluetooth/1.0/Android.bp b/bluetooth/1.0/Android.bp
index f2c394b..2373ceb 100644
--- a/bluetooth/1.0/Android.bp
+++ b/bluetooth/1.0/Android.bp
@@ -14,9 +14,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.bluetooth@1.0",
     srcs: [
-        "types.hal",
-        "IBluetoothHci.hal",
-        "IBluetoothHciCallbacks.hal",
+        ":android.hardware.bluetooth@1.0_hal",
     ],
     out: [
         "android/hardware/bluetooth/1.0/types.cpp",
@@ -30,9 +28,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.bluetooth@1.0",
     srcs: [
-        "types.hal",
-        "IBluetoothHci.hal",
-        "IBluetoothHciCallbacks.hal",
+        ":android.hardware.bluetooth@1.0_hal",
     ],
     out: [
         "android/hardware/bluetooth/1.0/types.h",
diff --git a/bluetooth/1.0/Android.mk b/bluetooth/1.0/Android.mk
index 7924cee..d824d5d 100644
--- a/bluetooth/1.0/Android.mk
+++ b/bluetooth/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.bluetooth@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -87,7 +87,7 @@
 LOCAL_MODULE := android.hardware.bluetooth@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/boot/1.0/Android.bp b/boot/1.0/Android.bp
index 9dcabc4..7265cc2 100644
--- a/boot/1.0/Android.bp
+++ b/boot/1.0/Android.bp
@@ -13,8 +13,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.boot@1.0",
     srcs: [
-        "types.hal",
-        "IBootControl.hal",
+        ":android.hardware.boot@1.0_hal",
     ],
     out: [
         "android/hardware/boot/1.0/types.cpp",
@@ -27,8 +26,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.boot@1.0",
     srcs: [
-        "types.hal",
-        "IBootControl.hal",
+        ":android.hardware.boot@1.0_hal",
     ],
     out: [
         "android/hardware/boot/1.0/types.h",
diff --git a/boot/1.0/Android.mk b/boot/1.0/Android.mk
index 6fa5e4b..b188acb 100644
--- a/boot/1.0/Android.mk
+++ b/boot/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.boot@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -83,7 +83,7 @@
 LOCAL_MODULE := android.hardware.boot@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/ir/1.0/Android.bp b/ir/1.0/Android.bp
index 5628952..da49579 100644
--- a/ir/1.0/Android.bp
+++ b/ir/1.0/Android.bp
@@ -13,8 +13,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.ir@1.0",
     srcs: [
-        "types.hal",
-        "IConsumerIr.hal",
+        ":android.hardware.ir@1.0_hal",
     ],
     out: [
         "android/hardware/ir/1.0/types.cpp",
@@ -27,8 +26,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.ir@1.0",
     srcs: [
-        "types.hal",
-        "IConsumerIr.hal",
+        ":android.hardware.ir@1.0_hal",
     ],
     out: [
         "android/hardware/ir/1.0/types.h",
diff --git a/ir/1.0/Android.mk b/ir/1.0/Android.mk
index 660b32b..d43286c 100644
--- a/ir/1.0/Android.mk
+++ b/ir/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.ir@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -64,7 +64,7 @@
 LOCAL_MODULE := android.hardware.ir@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/nfc/1.0/Android.bp b/nfc/1.0/Android.bp
index 7f228a7..e7305b4 100644
--- a/nfc/1.0/Android.bp
+++ b/nfc/1.0/Android.bp
@@ -14,9 +14,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.nfc@1.0",
     srcs: [
-        "types.hal",
-        "INfc.hal",
-        "INfcClientCallback.hal",
+        ":android.hardware.nfc@1.0_hal",
     ],
     out: [
         "android/hardware/nfc/1.0/types.cpp",
@@ -30,9 +28,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.nfc@1.0",
     srcs: [
-        "types.hal",
-        "INfc.hal",
-        "INfcClientCallback.hal",
+        ":android.hardware.nfc@1.0_hal",
     ],
     out: [
         "android/hardware/nfc/1.0/types.h",
diff --git a/nfc/1.0/Android.mk b/nfc/1.0/Android.mk
index 823bde5..6f09764 100644
--- a/nfc/1.0/Android.mk
+++ b/nfc/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.nfc@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -106,7 +106,7 @@
 LOCAL_MODULE := android.hardware.nfc@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -204,7 +204,7 @@
 LOCAL_MODULE := android.hardware.nfc@1.0-java-constants
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 #
diff --git a/radio/1.0/Android.bp b/radio/1.0/Android.bp
index d9df910..f59cf66 100644
--- a/radio/1.0/Android.bp
+++ b/radio/1.0/Android.bp
@@ -17,12 +17,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.radio@1.0",
     srcs: [
-        "types.hal",
-        "IRadio.hal",
-        "IRadioIndication.hal",
-        "IRadioResponse.hal",
-        "ISap.hal",
-        "ISapCallback.hal",
+        ":android.hardware.radio@1.0_hal",
     ],
     out: [
         "android/hardware/radio/1.0/types.cpp",
@@ -39,12 +34,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.radio@1.0",
     srcs: [
-        "types.hal",
-        "IRadio.hal",
-        "IRadioIndication.hal",
-        "IRadioResponse.hal",
-        "ISap.hal",
-        "ISapCallback.hal",
+        ":android.hardware.radio@1.0_hal",
     ],
     out: [
         "android/hardware/radio/1.0/types.h",
diff --git a/radio/1.0/Android.mk b/radio/1.0/Android.mk
index 82bde55..9e9588a 100644
--- a/radio/1.0/Android.mk
+++ b/radio/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.radio@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -55,6 +55,44 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (ApnTypes)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/ApnTypes.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.ApnTypes
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (ApnTypes)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/ApnTypes.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.ApnTypes
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (AppState)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/AppState.java
@@ -1290,6 +1328,25 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (DeviceStateType)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/DeviceStateType.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.DeviceStateType
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (Dial)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/Dial.java
@@ -1537,6 +1594,25 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (IndicationFilter)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/IndicationFilter.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.IndicationFilter
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (LastCallFailCause)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/LastCallFailCause.java
@@ -1651,6 +1727,25 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (MvnoType)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/MvnoType.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.MvnoType
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (NeighboringCell)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/NeighboringCell.java
@@ -2828,83 +2923,6 @@
 	$(transform-generated-source)
 LOCAL_GENERATED_SOURCES += $(GEN)
 
-
-#
-# Build types.hal (MvnoType)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/MvnoType.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.MvnoType
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build types.hal (ApnTypes)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/ApnTypes.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.ApnTypes
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build types.hal (IndicationFilter)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/IndicationFilter.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.IndicationFilter
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build types.hal (DeviceStateType)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/DeviceStateType.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.DeviceStateType
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
 #
 # Build IRadio.hal
 #
@@ -3024,7 +3042,7 @@
 LOCAL_MODULE := android.hardware.radio@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -3071,6 +3089,44 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (ApnTypes)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/ApnTypes.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.ApnTypes
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (ApnTypes)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/ApnTypes.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.ApnTypes
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (AppState)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/AppState.java
@@ -4306,6 +4362,25 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (DeviceStateType)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/DeviceStateType.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.DeviceStateType
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (Dial)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/Dial.java
@@ -4553,6 +4628,25 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (IndicationFilter)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/IndicationFilter.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.IndicationFilter
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (LastCallFailCause)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/LastCallFailCause.java
@@ -4667,6 +4761,25 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
+# Build types.hal (MvnoType)
+#
+GEN := $(intermediates)/android/hardware/radio/V1_0/MvnoType.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.0::types.MvnoType
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (NeighboringCell)
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/NeighboringCell.java
@@ -5845,82 +5958,6 @@
 LOCAL_GENERATED_SOURCES += $(GEN)
 
 #
-# Build types.hal (MvnoType)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/MvnoType.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.MvnoType
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build types.hal (ApnTypes)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/ApnTypes.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.ApnTypes
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build types.hal (IndicationFilter)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/IndicationFilter.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.IndicationFilter
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build types.hal (DeviceStateType)
-#
-GEN := $(intermediates)/android/hardware/radio/V1_0/DeviceStateType.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.radio@1.0::types.DeviceStateType
-
-$(GEN): $(LOCAL_PATH)/types.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
 # Build IRadio.hal
 #
 GEN := $(intermediates)/android/hardware/radio/V1_0/IRadio.java
diff --git a/tests/Android.bp b/tests/Android.bp
index 8b3e8b1..337e4f4 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -17,4 +17,7 @@
     "pointer/1.0",
     "pointer/1.0/default",
     "pointer/1.0/default/lib",
+    "versioning/1.0",
+    "versioning/2.2",
+    "versioning/2.3",
 ]
diff --git a/tests/bar/1.0/Android.bp b/tests/bar/1.0/Android.bp
index 924b3ab..694804c 100644
--- a/tests/bar/1.0/Android.bp
+++ b/tests/bar/1.0/Android.bp
@@ -17,12 +17,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.bar@1.0",
     srcs: [
-        "types.hal",
-        "IBar.hal",
-        "IComplicated.hal",
-        "IFooCallback.hal",
-        "IImportRules.hal",
-        "IImportTypes.hal",
+        ":android.hardware.tests.bar@1.0_hal",
     ],
     out: [
         "android/hardware/tests/bar/1.0/types.cpp",
@@ -39,12 +34,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.bar@1.0",
     srcs: [
-        "types.hal",
-        "IBar.hal",
-        "IComplicated.hal",
-        "IFooCallback.hal",
-        "IImportRules.hal",
-        "IImportTypes.hal",
+        ":android.hardware.tests.bar@1.0_hal",
     ],
     out: [
         "android/hardware/tests/bar/1.0/types.h",
diff --git a/tests/baz/1.0/Android.bp b/tests/baz/1.0/Android.bp
index 1cf71b6..7939444 100644
--- a/tests/baz/1.0/Android.bp
+++ b/tests/baz/1.0/Android.bp
@@ -15,10 +15,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.baz@1.0",
     srcs: [
-        "types.hal",
-        "IBase.hal",
-        "IBaz.hal",
-        "IBazCallback.hal",
+        ":android.hardware.tests.baz@1.0_hal",
     ],
     out: [
         "android/hardware/tests/baz/1.0/types.cpp",
@@ -33,10 +30,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.baz@1.0",
     srcs: [
-        "types.hal",
-        "IBase.hal",
-        "IBaz.hal",
-        "IBazCallback.hal",
+        ":android.hardware.tests.baz@1.0_hal",
     ],
     out: [
         "android/hardware/tests/baz/1.0/types.h",
diff --git a/tests/baz/1.0/Android.mk b/tests/baz/1.0/Android.mk
index 82ba3cb..40026ec 100644
--- a/tests/baz/1.0/Android.mk
+++ b/tests/baz/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.tests.baz@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -85,7 +85,7 @@
 LOCAL_MODULE := android.hardware.tests.baz@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/tests/expression/1.0/Android.bp b/tests/expression/1.0/Android.bp
index 1730aba..5279503 100644
--- a/tests/expression/1.0/Android.bp
+++ b/tests/expression/1.0/Android.bp
@@ -13,8 +13,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
     srcs: [
-        "IExpression.hal",
-        "IExpressionExt.hal",
+        ":android.hardware.tests.expression@1.0_hal",
     ],
     out: [
         "android/hardware/tests/expression/1.0/ExpressionAll.cpp",
@@ -27,8 +26,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
     srcs: [
-        "IExpression.hal",
-        "IExpressionExt.hal",
+        ":android.hardware.tests.expression@1.0_hal",
     ],
     out: [
         "android/hardware/tests/expression/1.0/IExpression.h",
diff --git a/tests/expression/1.0/Android.mk b/tests/expression/1.0/Android.mk
index 1c7da4b..6bc9390 100644
--- a/tests/expression/1.0/Android.mk
+++ b/tests/expression/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.tests.expression@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -64,7 +64,7 @@
 LOCAL_MODULE := android.hardware.tests.expression@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/tests/foo/1.0/Android.bp b/tests/foo/1.0/Android.bp
index c65d3cf..9572855 100644
--- a/tests/foo/1.0/Android.bp
+++ b/tests/foo/1.0/Android.bp
@@ -17,12 +17,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.foo@1.0",
     srcs: [
-        "types.hal",
-        "IFoo.hal",
-        "IFooCallback.hal",
-        "IMyTypes.hal",
-        "ISimple.hal",
-        "ITheirTypes.hal",
+        ":android.hardware.tests.foo@1.0_hal",
     ],
     out: [
         "android/hardware/tests/foo/1.0/types.cpp",
@@ -39,12 +34,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.foo@1.0",
     srcs: [
-        "types.hal",
-        "IFoo.hal",
-        "IFooCallback.hal",
-        "IMyTypes.hal",
-        "ISimple.hal",
-        "ITheirTypes.hal",
+        ":android.hardware.tests.foo@1.0_hal",
     ],
     out: [
         "android/hardware/tests/foo/1.0/types.h",
diff --git a/tests/inheritance/1.0/Android.bp b/tests/inheritance/1.0/Android.bp
index 433e9ac..f50aee4 100644
--- a/tests/inheritance/1.0/Android.bp
+++ b/tests/inheritance/1.0/Android.bp
@@ -15,10 +15,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.inheritance@1.0",
     srcs: [
-        "IChild.hal",
-        "IFetcher.hal",
-        "IGrandparent.hal",
-        "IParent.hal",
+        ":android.hardware.tests.inheritance@1.0_hal",
     ],
     out: [
         "android/hardware/tests/inheritance/1.0/ChildAll.cpp",
@@ -33,10 +30,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.inheritance@1.0",
     srcs: [
-        "IChild.hal",
-        "IFetcher.hal",
-        "IGrandparent.hal",
-        "IParent.hal",
+        ":android.hardware.tests.inheritance@1.0_hal",
     ],
     out: [
         "android/hardware/tests/inheritance/1.0/IChild.h",
diff --git a/tests/inheritance/1.0/Android.mk b/tests/inheritance/1.0/Android.mk
index 8c1b1c8..21aac00 100644
--- a/tests/inheritance/1.0/Android.mk
+++ b/tests/inheritance/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.tests.inheritance@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -110,7 +110,7 @@
 LOCAL_MODULE := android.hardware.tests.inheritance@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/tests/libhwbinder/1.0/Android.bp b/tests/libhwbinder/1.0/Android.bp
index 1d0b4b5..580e961 100644
--- a/tests/libhwbinder/1.0/Android.bp
+++ b/tests/libhwbinder/1.0/Android.bp
@@ -12,7 +12,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.libhwbinder@1.0",
     srcs: [
-        "IBenchmark.hal",
+        ":android.hardware.tests.libhwbinder@1.0_hal",
     ],
     out: [
         "android/hardware/tests/libhwbinder/1.0/BenchmarkAll.cpp",
@@ -24,7 +24,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.libhwbinder@1.0",
     srcs: [
-        "IBenchmark.hal",
+        ":android.hardware.tests.libhwbinder@1.0_hal",
     ],
     out: [
         "android/hardware/tests/libhwbinder/1.0/IBenchmark.h",
diff --git a/tests/libhwbinder/1.0/Android.mk b/tests/libhwbinder/1.0/Android.mk
index ae873af..2ee26d6 100644
--- a/tests/libhwbinder/1.0/Android.mk
+++ b/tests/libhwbinder/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.tests.libhwbinder@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -43,7 +43,7 @@
 LOCAL_MODULE := android.hardware.tests.libhwbinder@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/tests/memory/1.0/Android.bp b/tests/memory/1.0/Android.bp
index 3f27810..49faf41 100644
--- a/tests/memory/1.0/Android.bp
+++ b/tests/memory/1.0/Android.bp
@@ -12,7 +12,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.memory@1.0",
     srcs: [
-        "IMemoryTest.hal",
+        ":android.hardware.tests.memory@1.0_hal",
     ],
     out: [
         "android/hardware/tests/memory/1.0/MemoryTestAll.cpp",
@@ -24,7 +24,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.memory@1.0",
     srcs: [
-        "IMemoryTest.hal",
+        ":android.hardware.tests.memory@1.0_hal",
     ],
     out: [
         "android/hardware/tests/memory/1.0/IMemoryTest.h",
diff --git a/tests/msgq/1.0/Android.bp b/tests/msgq/1.0/Android.bp
index 39fef89..d17efe4 100644
--- a/tests/msgq/1.0/Android.bp
+++ b/tests/msgq/1.0/Android.bp
@@ -12,7 +12,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.msgq@1.0",
     srcs: [
-        "ITestMsgQ.hal",
+        ":android.hardware.tests.msgq@1.0_hal",
     ],
     out: [
         "android/hardware/tests/msgq/1.0/TestMsgQAll.cpp",
@@ -24,7 +24,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.msgq@1.0",
     srcs: [
-        "ITestMsgQ.hal",
+        ":android.hardware.tests.msgq@1.0_hal",
     ],
     out: [
         "android/hardware/tests/msgq/1.0/ITestMsgQ.h",
diff --git a/tests/pointer/1.0/Android.bp b/tests/pointer/1.0/Android.bp
index e40003d..7f66e2a 100644
--- a/tests/pointer/1.0/Android.bp
+++ b/tests/pointer/1.0/Android.bp
@@ -13,8 +13,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.pointer@1.0",
     srcs: [
-        "IGraph.hal",
-        "IPointer.hal",
+        ":android.hardware.tests.pointer@1.0_hal",
     ],
     out: [
         "android/hardware/tests/pointer/1.0/GraphAll.cpp",
@@ -27,8 +26,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.pointer@1.0",
     srcs: [
-        "IGraph.hal",
-        "IPointer.hal",
+        ":android.hardware.tests.pointer@1.0_hal",
     ],
     out: [
         "android/hardware/tests/pointer/1.0/IGraph.h",
diff --git a/tests/versioning/1.0/Android.bp b/tests/versioning/1.0/Android.bp
new file mode 100644
index 0000000..fd331f2
--- /dev/null
+++ b/tests/versioning/1.0/Android.bp
@@ -0,0 +1,59 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+filegroup {
+    name: "android.hardware.tests.versioning@1.0_hal",
+    srcs: [
+        "IFoo.hal",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@1.0_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@1.0",
+    srcs: [
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/1.0/FooAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@1.0_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@1.0",
+    srcs: [
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/1.0/IFoo.h",
+        "android/hardware/tests/versioning/1.0/IHwFoo.h",
+        "android/hardware/tests/versioning/1.0/BnHwFoo.h",
+        "android/hardware/tests/versioning/1.0/BpHwFoo.h",
+        "android/hardware/tests/versioning/1.0/BsFoo.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hardware.tests.versioning@1.0",
+    generated_sources: ["android.hardware.tests.versioning@1.0_genc++"],
+    generated_headers: ["android.hardware.tests.versioning@1.0_genc++_headers"],
+    export_generated_headers: ["android.hardware.tests.versioning@1.0_genc++_headers"],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hidl.base@1.0",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hidl.base@1.0",
+    ],
+}
diff --git a/tests/versioning/1.0/Android.mk b/tests/versioning/1.0/Android.mk
new file mode 100644
index 0000000..753ad0c
--- /dev/null
+++ b/tests/versioning/1.0/Android.mk
@@ -0,0 +1,76 @@
+# This file is autogenerated by hidl-gen. Do not edit manually.
+
+LOCAL_PATH := $(call my-dir)
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@1.0-java
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java \
+
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V1_0/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@1.0::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_JAVA_LIBRARY)
+
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@1.0-java-static
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java-static \
+
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V1_0/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@1.0::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/1.0/IFoo.hal b/tests/versioning/1.0/IFoo.hal
new file mode 100644
index 0000000..0571eff
--- /dev/null
+++ b/tests/versioning/1.0/IFoo.hal
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.tests.versioning@1.0;
+
+interface IFoo {
+};
diff --git a/tests/versioning/2.2/Android.bp b/tests/versioning/2.2/Android.bp
new file mode 100644
index 0000000..5e90105
--- /dev/null
+++ b/tests/versioning/2.2/Android.bp
@@ -0,0 +1,68 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+filegroup {
+    name: "android.hardware.tests.versioning@2.2_hal",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.2_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.2",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.2/BarAll.cpp",
+        "android/hardware/tests/versioning/2.2/FooAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.2_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.2",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.2/IBar.h",
+        "android/hardware/tests/versioning/2.2/IHwBar.h",
+        "android/hardware/tests/versioning/2.2/BnHwBar.h",
+        "android/hardware/tests/versioning/2.2/BpHwBar.h",
+        "android/hardware/tests/versioning/2.2/BsBar.h",
+        "android/hardware/tests/versioning/2.2/IFoo.h",
+        "android/hardware/tests/versioning/2.2/IHwFoo.h",
+        "android/hardware/tests/versioning/2.2/BnHwFoo.h",
+        "android/hardware/tests/versioning/2.2/BpHwFoo.h",
+        "android/hardware/tests/versioning/2.2/BsFoo.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hardware.tests.versioning@2.2",
+    generated_sources: ["android.hardware.tests.versioning@2.2_genc++"],
+    generated_headers: ["android.hardware.tests.versioning@2.2_genc++_headers"],
+    export_generated_headers: ["android.hardware.tests.versioning@2.2_genc++_headers"],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hidl.base@1.0",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hidl.base@1.0",
+    ],
+}
diff --git a/tests/versioning/2.2/Android.mk b/tests/versioning/2.2/Android.mk
new file mode 100644
index 0000000..6376652
--- /dev/null
+++ b/tests/versioning/2.2/Android.mk
@@ -0,0 +1,114 @@
+# This file is autogenerated by hidl-gen. Do not edit manually.
+
+LOCAL_PATH := $(call my-dir)
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@2.2-java
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java \
+
+
+#
+# Build IBar.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IBar.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.2::IBar
+
+$(GEN): $(LOCAL_PATH)/IBar.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.2::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_JAVA_LIBRARY)
+
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@2.2-java-static
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java-static \
+
+
+#
+# Build IBar.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IBar.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.2::IBar
+
+$(GEN): $(LOCAL_PATH)/IBar.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.2::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/2.2/IBar.hal b/tests/versioning/2.2/IBar.hal
new file mode 100644
index 0000000..e28ce19
--- /dev/null
+++ b/tests/versioning/2.2/IBar.hal
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.tests.versioning@2.2;
+
+interface IBar {
+
+};
diff --git a/tests/versioning/2.2/IFoo.hal b/tests/versioning/2.2/IFoo.hal
new file mode 100644
index 0000000..d6b8782
--- /dev/null
+++ b/tests/versioning/2.2/IFoo.hal
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.tests.versioning@2.2;
+
+interface IFoo {
+
+};
diff --git a/tests/versioning/2.3/Android.bp b/tests/versioning/2.3/Android.bp
new file mode 100644
index 0000000..1489539
--- /dev/null
+++ b/tests/versioning/2.3/Android.bp
@@ -0,0 +1,68 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+filegroup {
+    name: "android.hardware.tests.versioning@2.3_hal",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.3_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.3",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.3/BarAll.cpp",
+        "android/hardware/tests/versioning/2.3/FooAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.3_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.3",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.3/IBar.h",
+        "android/hardware/tests/versioning/2.3/IHwBar.h",
+        "android/hardware/tests/versioning/2.3/BnHwBar.h",
+        "android/hardware/tests/versioning/2.3/BpHwBar.h",
+        "android/hardware/tests/versioning/2.3/BsBar.h",
+        "android/hardware/tests/versioning/2.3/IFoo.h",
+        "android/hardware/tests/versioning/2.3/IHwFoo.h",
+        "android/hardware/tests/versioning/2.3/BnHwFoo.h",
+        "android/hardware/tests/versioning/2.3/BpHwFoo.h",
+        "android/hardware/tests/versioning/2.3/BsFoo.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hardware.tests.versioning@2.3",
+    generated_sources: ["android.hardware.tests.versioning@2.3_genc++"],
+    generated_headers: ["android.hardware.tests.versioning@2.3_genc++_headers"],
+    export_generated_headers: ["android.hardware.tests.versioning@2.3_genc++_headers"],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hardware.tests.versioning@2.2",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hardware.tests.versioning@2.2",
+    ],
+}
diff --git a/tests/versioning/2.3/Android.mk b/tests/versioning/2.3/Android.mk
new file mode 100644
index 0000000..5b05152
--- /dev/null
+++ b/tests/versioning/2.3/Android.mk
@@ -0,0 +1,116 @@
+# This file is autogenerated by hidl-gen. Do not edit manually.
+
+LOCAL_PATH := $(call my-dir)
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@2.3-java
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_JAVA_LIBRARIES := \
+    android.hardware.tests.versioning@2.2-java \
+    android.hidl.base@1.0-java \
+
+
+#
+# Build IBar.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IBar.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.3::IBar
+
+$(GEN): $(LOCAL_PATH)/IBar.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.3::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_JAVA_LIBRARY)
+
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@2.3-java-static
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android.hardware.tests.versioning@2.2-java-static \
+    android.hidl.base@1.0-java-static \
+
+
+#
+# Build IBar.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IBar.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.3::IBar
+
+$(GEN): $(LOCAL_PATH)/IBar.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.3::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/2.3/IBar.hal b/tests/versioning/2.3/IBar.hal
new file mode 100644
index 0000000..946d42e
--- /dev/null
+++ b/tests/versioning/2.3/IBar.hal
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.tests.versioning@2.3;
+
+import @2.2::IBar;
+
+// Must extend @2.3::IBar.
+interface IBar extends @2.2::IBar {
+
+};
diff --git a/tests/versioning/2.3/IFoo.hal b/tests/versioning/2.3/IFoo.hal
new file mode 100644
index 0000000..c450dd2
--- /dev/null
+++ b/tests/versioning/2.3/IFoo.hal
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.tests.versioning@2.3;
+
+import @2.2::IFoo;
+
+// Must extend @2.3::IFoo.
+interface IFoo extends @2.2::IFoo {
+
+};
diff --git a/wifi/1.0/Android.bp b/wifi/1.0/Android.bp
index 59326d0..2319999 100644
--- a/wifi/1.0/Android.bp
+++ b/wifi/1.0/Android.bp
@@ -25,20 +25,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.wifi@1.0",
     srcs: [
-        "types.hal",
-        "IWifi.hal",
-        "IWifiApIface.hal",
-        "IWifiChip.hal",
-        "IWifiChipEventCallback.hal",
-        "IWifiEventCallback.hal",
-        "IWifiIface.hal",
-        "IWifiNanIface.hal",
-        "IWifiNanIfaceEventCallback.hal",
-        "IWifiP2pIface.hal",
-        "IWifiRttController.hal",
-        "IWifiRttControllerEventCallback.hal",
-        "IWifiStaIface.hal",
-        "IWifiStaIfaceEventCallback.hal",
+        ":android.hardware.wifi@1.0_hal",
     ],
     out: [
         "android/hardware/wifi/1.0/types.cpp",
@@ -63,20 +50,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.wifi@1.0",
     srcs: [
-        "types.hal",
-        "IWifi.hal",
-        "IWifiApIface.hal",
-        "IWifiChip.hal",
-        "IWifiChipEventCallback.hal",
-        "IWifiEventCallback.hal",
-        "IWifiIface.hal",
-        "IWifiNanIface.hal",
-        "IWifiNanIfaceEventCallback.hal",
-        "IWifiP2pIface.hal",
-        "IWifiRttController.hal",
-        "IWifiRttControllerEventCallback.hal",
-        "IWifiStaIface.hal",
-        "IWifiStaIfaceEventCallback.hal",
+        ":android.hardware.wifi@1.0_hal",
     ],
     out: [
         "android/hardware/wifi/1.0/types.h",
diff --git a/wifi/1.0/Android.mk b/wifi/1.0/Android.mk
index abf12da..4476b14 100644
--- a/wifi/1.0/Android.mk
+++ b/wifi/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.wifi@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -1811,7 +1811,7 @@
 LOCAL_MODULE := android.hardware.wifi@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
diff --git a/wifi/supplicant/1.0/Android.bp b/wifi/supplicant/1.0/Android.bp
index b985a93..a6c2758 100644
--- a/wifi/supplicant/1.0/Android.bp
+++ b/wifi/supplicant/1.0/Android.bp
@@ -24,19 +24,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.wifi.supplicant@1.0",
     srcs: [
-        "types.hal",
-        "ISupplicant.hal",
-        "ISupplicantCallback.hal",
-        "ISupplicantIface.hal",
-        "ISupplicantNetwork.hal",
-        "ISupplicantP2pIface.hal",
-        "ISupplicantP2pIfaceCallback.hal",
-        "ISupplicantP2pNetwork.hal",
-        "ISupplicantP2pNetworkCallback.hal",
-        "ISupplicantStaIface.hal",
-        "ISupplicantStaIfaceCallback.hal",
-        "ISupplicantStaNetwork.hal",
-        "ISupplicantStaNetworkCallback.hal",
+        ":android.hardware.wifi.supplicant@1.0_hal",
     ],
     out: [
         "android/hardware/wifi/supplicant/1.0/types.cpp",
@@ -60,19 +48,7 @@
     tools: ["hidl-gen"],
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.wifi.supplicant@1.0",
     srcs: [
-        "types.hal",
-        "ISupplicant.hal",
-        "ISupplicantCallback.hal",
-        "ISupplicantIface.hal",
-        "ISupplicantNetwork.hal",
-        "ISupplicantP2pIface.hal",
-        "ISupplicantP2pIfaceCallback.hal",
-        "ISupplicantP2pNetwork.hal",
-        "ISupplicantP2pNetworkCallback.hal",
-        "ISupplicantStaIface.hal",
-        "ISupplicantStaIfaceCallback.hal",
-        "ISupplicantStaNetwork.hal",
-        "ISupplicantStaNetworkCallback.hal",
+        ":android.hardware.wifi.supplicant@1.0_hal",
     ],
     out: [
         "android/hardware/wifi/supplicant/1.0/types.h",
diff --git a/wifi/supplicant/1.0/Android.mk b/wifi/supplicant/1.0/Android.mk
index ad49b0a..dd210d0 100644
--- a/wifi/supplicant/1.0/Android.mk
+++ b/wifi/supplicant/1.0/Android.mk
@@ -8,7 +8,7 @@
 LOCAL_MODULE := android.hardware.wifi.supplicant@1.0-java
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
 
@@ -387,7 +387,7 @@
 LOCAL_MODULE := android.hardware.wifi.supplicant@1.0-java-static
 LOCAL_MODULE_CLASS := JAVA_LIBRARIES
 
-intermediates := $(local-generated-sources-dir)
+intermediates := $(call local-generated-sources-dir, COMMON)
 
 HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)